linux-kernel - Re: Linux time code

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Message-ID: <Pine.LNX.4.64.0608201906410.6761@scrub.home>
Date:	Sun, 20 Aug 2006 19:10:39 +0200 (CEST)
From:	Roman Zippel <zippel@...ux-m68k.org>
To:	john stultz <johnstul@...ibm.com>
cc:	Ulrich Windl <ulrich.windl@...uni-regensburg.de>,
	linux-kernel@...r.kernel.org, Udo van den Heuvel <udovdh@...all.nl>
Subject: Re: Linux time code

Hi,

On Thu, 17 Aug 2006, john stultz wrote:

> > What is missing is the abiltity to map a clock to a posix clock, so that 
> > you would have CLOCK_REALTIME/CLOCK_MONOTONIC as NTP controlled clocks and 
> > other CLOCK_* as the raw clock.
> 
> Is there a use case for this (wanting non-NTP corrected time on a system
> running NTPd) you have in mind?

Most are probably special cases, but a more general use would be to allow
tracking the stability of multiple clocks, so you can check which is most 
suited for a time server. So far you can only do it for one clock at a 
time and you have to turn off NTP for calibration.

bye, Roman
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